Hi siddharthsinha123.
In my experience, the GMAT Club quant tests are somewhat harder than the real thing and than other practice tests. So, that you scored lower on GMAT Club quant tests than you have on others is not particularly surprising. I did the same when I started using them.
Regarding your scores and what may seem to be discrepancies between your performance and your scores, while you got fewer right on your first test than on your third test and yet scored higher on the first than on the third, as you may have noticed, your hit rate for easy questions was much higher on the first test and second test than on the third one. Missing easy questions can drag your score down significantly. So, the scores that you got make sense given your hit rates on easy questions.
There's lesson to be learned from this experience actually. A key part of hitting a GMAT score goal is to get the easy and medium question correct.
Anyway, there's nothing really out of line in your scores. The
GMAT Club Tests do tend to generate scores somewhat lower than those generated by the real thing, and at the same time, they are great learning tools. So, you can use them for that purpose, play them like a game seeking to score higher, and learn to rock the GMAT like a champ.